A pneumatic tire having a tire cavity (28) defined by an inner liner (26), an air inlet housing (92) affixed to the inner liner (26) and a first sidewall (16) having an elongate sidewall groove (30) therein is disclosed. The elongate sidewall groove (30) contains an elongate air tube (34) having an elongate internal air passageway (32). The air tube (34) is located to operatively compress segment by segment from an expanded diameter to a substantially reduced diameter responsive to a bending strain introduced into the first sidewall (16) from a rolling tire footprint whereby forcing air segment by segment along the air tube internal air passageway (32). The air tube (34) has a substantially on-side mushroom-shaped sectional profile extending radially into the first tire sidewall (16). The air tube (34) has a radially inward cap of relatively larger diametric dimension affixed to a radially outward tube stem of relatively smaller diametric dimension, the inward tube cap residing within an a relatively larger diametric region of the sidewall groove (30) and extending in a lateral outward direction from the tube stem in an orientation substantially parallel with an outward surface of the first sidewall (16). The tube stem has a tapering sectional profile defined by converging sides extending in a radial direction outward from the tube cap to a radially outward stem end surface. Also, a method of assembling a peristaltic air pumping mechanism (14) into a tire (12). The tire (12) is preferably an air maintenance tire.
Peristaltic air pumping tube and tire assembly and method
Peristaltische Luftpumprohr- und Reifeneinheit und Verfahren
Tube de pompage d'air péristaltique et ensemble de pneu et procédé
2015-06-17
Patent
Electronic Resource
English
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |
Peristaltic air pumping tube and tire assembly and method
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